Create a proper render engine

[nak0x]

As for right now, each scene is responsible for printing to the console the content of it.
The render is simply handled by the Engine it's self calling the view render function.

Create a proper rendering engine, that take a content from a view and display it. A ViewContentcan be used, so they can be used as components and be nesteds to build complex scenes.

Make use of a proper TUI render such as ncurses. RTFM